DIN EN 4630-2008
航空航天系列.FE-PM 3504(X4CrNiMo16-5-1)型钢.空气熔炼.淬火和回火.锻件.De≤200mm.900MPa≤Rm≤1050MPa
Aerospace series - Steel FE-PM 3504 (X4CrNiMo16-5-1) - Air melted - Hardened and tempered - Forgings - De 200 mm - 900 MPa Rm 1050 MPa; German and English version EN 4630:2007